A survey of 1000 students is conducted for their I.Q. is as follows :
(I.Q. - Number of students)
Below 30 - 120
30 — 50 - 230
50 — 60 - 300
60 — 70 - 190
More than 70 - 160
Find the probability of
(i) I.Q. between 50 — 60
(ii) I.Q. more than 70
(iii) I.Q. 50 or below 50
(iv) I.Q. between 60 — 70
(v) I.Q. more than 50
Answers
Answered by
4
Answer:
the formula for finding probablity is favorable out come divided by total number of out come
Step-by-step explanation:
1) 300/1000
= 3/10
2)160/1000
=16/100
3)230+120/1000
=350/1000
=35/100
4)300+190+160/1000
=650/1000
=65/100
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